6/24/2023 0 Comments Cow magnetFifth, the magnet should be designed so as to be easily introduced through a cow's throat and into its stomach. Fourth, the magnet must be dimensioned such that it is not likely to pass from the cow's stomach to the intestines. Third, the magnet must be able to withstand the corrosive environment of the cow's stomach for many years, as it likely will never be removed. Second, the magnet must be non-toxic so that it does it harm the cow's health. First, the magnet must create a magnetic field sufficiently strong to attract and capture substantially all of the metal scraps found in a cow's stomach. In constructing such a device, several factors must be considered. In general, a cow magnet is a magnet placed in a cow's stomach so that metal fragments will attach to it and be prevented from passing on to the cow's intestines. To this end, a variety of "cow magnets" have been developed. A61D1/00- Surgical instruments for veterinary use.A61D- VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS.A61- MEDICAL OR VETERINARY SCIENCE HYGIENE.Assignors: LARRY, DABY Anticipated expiration legal-status Critical Status Expired - Fee Related legal-status Critical Current Links Priority to US09/120,767 priority Critical patent/US5905425A/en Application granted granted Critical Publication of US5905425A publication Critical patent/US5905425A/en Assigned to RIGLEY THOMAS reassignment RIGLEY THOMAS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Dalby Larry S., Rigley Thomas D. Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Rigley Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US09/120,767 Inventor Larry S. The magnet remains inside the cow for the life of the animal (and apparently can be reused afterward), and the presence of the magnet and the attracted metal in the rumen apparently has no effect on the cow’s health or lifespan.Download PDF Info Publication number US5905425A US5905425A US09/120,767 US12076798A US5905425A US 5905425 A US5905425 A US 5905425A US 12076798 A US12076798 A US 12076798A US 5905425 A US5905425 A US 5905425A Authority US United States Prior art keywords magnet cow cover interior cylindrical Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. In feedlots, metal pieces may come off feed-handling equipment and be mixed with the feed.Īnd it sits there collecting stray metal before it can cause the cow pain. Nails, roofing tacks or other sharp metal objects are often found around a barnyard or a junk pile that cattle have access to when grazing. Old fence wire lying in a field, with the hay grown up around it, may be chopped up by the swather and baler, ending up in hay. The reticulum lies against the diaphragm.Ĭows may ingest fence staples, barn nails, bits of wire or any other objects that find their way into the feed. Contractions of this stomach during normal digestion may push them through the stomach wall. The magnets are designed to sit in the cow’s rumen.įoreign objects that don't pass through usually fall into the reticulum. They often ingest foreign material, especially when eating hay or processed feed. When in the cow's stomach, metals on the magnet can be repositioned with minimum pressure on the reticular wall, reducing punctures.Ĭattle eat quickly, without sorting their feed. Rounded ends for less stress on the animal. It helps prevent hardware disease in cattle. The silver bullet magnet is made of aluminum, nickel and cobalt material.
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